For all permanent mount RV toilets; fits standard 3″ opening. Compresses to form a watertight seal between the toilet and the floor flange. Any time you install or reinstall a toilet, this seal should be replaced. New toilets come with a seal so you need to buy this only if you are keeping your old toilet but removing and reinstalling.
4-7/8″ Outside Diameter
3-1/4″ Inside Diameter
